/*
 * Copyright 1999-2101 Alibaba Group.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.fastjson.serializer;

import java.io.IOException;
import java.util.List;

/**
 * 
 * @author wenshao<szujobs@hotmail.com>
 * 
 */
public final class ListSerializer extends ObjectSerializer {
	public static final ListSerializer instance = new ListSerializer();

	public final void write(JSONSerializer serializer, Object object) throws IOException {
		SerializeWriter out = serializer.getWrier();
		
		if (object == null) {
			out.write("null");
			return;
		}

		List<?> list = (List<?>) object;

		final int size = list.size();
		int end = size - 1;

		if (end == -1) {
			out.append("[]");
			return;
		}

		out.append('[');
		for (int i = 0; i < end; ++i) {
			Object item = list.get(i);

			if (item == null) {
				out.append("null,");
			} else {
				Class<?> clazz = item.getClass();

				if (clazz == Integer.class) {
					out.writeIntAndChar(((Integer) item).intValue(), ',');
				} else if (clazz == Long.class) {
					long val = ((Long) item).longValue();
					out.writeLongAndChar(val, ',');
				} else {
					serializer.write(item);
					out.append(',');
				}
			}
		}

		Object item = list.get(end);

		if (item == null) {
			out.append("null]");
		} else {
			Class<?> clazz = item.getClass();

			if (clazz == Integer.class) {
				out.writeIntAndChar(((Integer) item).intValue(), ']');
			} else if (clazz == Long.class) {
				out.writeLongAndChar(((Long) item).longValue(), ']');
			} else {
				serializer.write(item);
				out.append(']');
			}
		}
	}
}